Abstract: A vehicle spare wheel lock construction including a lock body having a funnel guide mounted on one end thereof and a multi-fingered spring-type retaining washer mounted on the other end thereof for biting engagement with the internal surface of a handle receptacle of the winch. The lock body has a key-receiving groove in the end thereof and a key adapter is mounted on the end of a winch handle and has a curvilinear ridge on the end thereof which is guided into the curvilinear groove of the lock body by the frustoconical funnel guide and an adjacent internal frustoconical surface within the lock body.